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<table width="100%" summary="page for ironslag"><tr><td>ironslag</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>Iron Content Measurements</h2>

<h3>Description</h3>

<p>The <code>ironslag</code> data frame has 53 rows and 2 columns.
Two methods for measuring the iron content in samples of slag 
were compared, a chemical and a magnetic method.  The chemical
method requires greater effort than the magnetic method.
</p>


<h3>Usage</h3>

<pre>ironslag</pre>


<h3>Format</h3>

<p>This data frame contains the following columns:
</p>

<dl>
<dt>chemical</dt><dd><p>a numeric vector containing the measurements
coming from the chemical method</p>
</dd>
<dt>magnetic</dt><dd><p>a numeric vector containing the measurments
coming from the magnetic method</p>
</dd>
</dl>



<h3>Source</h3>

<p>Hand, D.J., Daly, F., McConway, K., Lunn, D., and Ostrowski, E. eds (1993)
A Handbook of Small Data Sets. London: Chapman &amp; Hall. 
</p>


<h3>Examples</h3>

<pre>
iron.lm &lt;- lm(chemical ~ magnetic, data = ironslag)
oldpar &lt;- par(mfrow = c(2,2))
plot(iron.lm)
par(oldpar)
</pre>


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